Air cleaner



AIR CLEANER Original Filed May 29, 1919 INVENTOR. Henri] R. Davies l omay enter the depressions 50.

baie 53 is isupported upon and spaced from Patented Apr. 9, i928?.

ranza HENRY R. DAITIES, OF VALLEY COTTAGE, NEW YORK, ASSIGNOR TO INDUSTRBE- SEARCH CORPORATION, OF TOLEDO, OHIO, A CORPORATION OF DELAWARE.

AIR CLEANER.

Application led May 29, 1919, Serial No. 300,617. Renewed August 29,1928.y

This invention relates to improvements. in air cleaners for removingdust and other foreign matter from the air about to enter the air intakeot' an internal combustion engine.

5 One of the objects of the invention is the provision of a cleaner ofthis character which shall accomplish the cleaning operation without theuse'of a sieve or dust-tight cloth, either of which when it becomesdirty chokes the air inlet and hence requires attention at frel quentintervals.

A further object is the provision of a dust receptacle in which the dustand foreign particles are deposited, said receptacle being arranged topermit ready removal for cleaning purposes.

Other objects, and objectsrelating to details of construction andeconomies of manufacture, will appear as I proceed with the descriptionof those embodiments of the invention, which, for the purposes of thepresent application, I have illustrated in the accompanyin drawings, inwhich:

Fig. is a vertical, sectional view of one 2,5 Iorm of the invention.

Fi II is a plan view of the structurein Fig. parts being broken away.

Figs. III and IV are vertical sectional views of further modications.

Similar reference characters refer to like parts throughout the views.

In Fig. I of the drawing one form of my air cleaner is shown which is ofthe type capable of use in connection with an internal combustionengine, the pipe connection 17 leading to the 'air inlet of the fuelmixture chamber of the engine.

Figs. I and II show a casing for the air cleaner made up of a singlesection 48, hav- 40 ing the form of an inverted frustum of a cone. Theinlet pipe 17 terminates flush with the top 49, which has depressionstherein, there being four in number distributed about thecircumference'of the plate 49. One end 45 of these depressionscommunicates with the interior of the casing. 'Ihese depressions arecovered, except at their closed ends, by a ring 51 which is secured tothe top .49 and is provided with holes 52 through which air The conicalthe sides of the casing, anda dust cup is threaded upon the bottom ofthe casing. 'Iwo baliies 54 and 55, also shaped like inverted 55frusftums of cones, are secured to the top 49 in concentric positionsinside the depressions 50. The entering air takes a spiral downwardcourse, depositing some of its dust upon the walls of the casing 48 andbaffle 54 and some upon the baile 53. rI`hen, in response to the seriesoil impulses causedby the engine suction7 the lighter, cleaner air,which is in the center, travels upwardly, directly through the openingsin the baffles 54 and 55 and into the exit pipe 17. Around the sides ofthis rising column there is air carrying more or less dust which movessomewhat less rapidly than that directly in the center. Some of it iscaught by the lower edges of the baffles 54 and/55 and deflectedoutwardly where it forms eddies, with the result that dust isdeposited,and the air thus cleaned gradually returns to the center again.

'Ihe cleaners shown in Figs. III and IV are somewhat similar inconstruction and operation as that shown in Figs. I and II. In bothcases there is a flat top 56 having a series of perforations 57 near itsperiphery and carrying the air exit pipe 17 at its center. In Fig. IIIthe casing consists of a single part 58 of the shape of an invertedfrustum of a cone, while in Fig. IV there are two parts, namely, acylindrical section 59 and an inwardly sloping bottom section 60.Conical baiiies 61 and 62 are supported upon and separated from thecasing sections 58 and 60 respectively. In each figure there is an upperannular baiiie, but each is caused to take the form of the casing withwhich it is employed, the baiiie 63 sloping inwardly parallel to thevcasing 58, and the balile 64 having vertical walls parallel to those ofthe casing section 59. 'Ihe air enters the openings 57 and travels downcomparatively slowly in `the narrow annular space between the casing andthe upper baes, depositing dust on ,the walls during its motion. Then inmaking ya nick turn around the lower edges of the ba e 63 or 64, theheavier particles are thrown inwardly against the baiies 61 or 62, asthe case 10g may be, and stillmoredust is deposited.

I am aware that the particular embodiments of my invention abovedescribed, and illustrated in the accompanying drawings,

are susceptible of considerable variation without departing from thespirit thereof, and therefore I desire to claim my invention broadly aswell asy speciically, as indicated by the appended claims;

I claim as my invention:

said casing being provided with an air exit at the center, one end ofsaid casing being provided with air inlet openings at the periphery, andtrough shaped air guides mounted upon the latter end of the casingcovering said air inlet openings and extending in the arc of a circle,each of said guides being open at one end to the interior of the casing,whereby the entering air is given a tendency towards motion in a circlesaid air guides being positioned in planes parallel to the casing end towhich they are attached.

3. In an air cleaner, a casing comprising a side section, and top andbottom end sections, the top end section being provided with an air exitat the center, and air inlet openlngs at its periphery, an auxiliary endsection mounted inside of and adjacent to said last named end section,said auxiliary sect1o n having integral trough shaped air guidesopposite said inlet opening and extendlng in the arc of a circle, eachof said guides open at one end to the interior of the casmg, whereby theentering air is given a tendency toward motion in a circle.

4. In an air cleaner, the combination of a truncated conical casinghaving large and vsmall ends; detachable dust collector closing saidsmall casing end; closure means for the large casing end having inletand outlet air conduits and including a plate connecting the large.casing end; and a plurality of separate alr frlction surfaces withinsaid casing adapted to hold dust particles from the in-casing air.

5. In an air cleaner, the combination of a truncated conical casinghaving large and small ends; detachable dust collector closing saldsmall casing end; closure means for the large casing end having inletand outlet air conduits and including a plate connecting the l largecasing end; and a plurality of separate air friction surfaces Withinsaid casing adapted to hold dust particles from the in-casing air, oneof said surfaces forming a cone converging toward the outlet condult. 6.In an air cleaner, the combination of a casing having inlet and outletconduits; a receptacle for dust particles; and a plurality ofsuperimposed projecting surfaces adjacent the outlet conduit, adapted toform dead air pockets. f

7. In an air cleaner, the combination of a caslng having inlet andoutlet condults; a

dust receptacle attached to the casing; and a bination of a truncatedconical casing having means adapted to be positioned with its lower endat its base; detachable closure means for the small end of said casingforming a dust receptacle; closing means for the rear end of the casingincluding a plate secured to the casing edge and having inlet and outletapertures formed therein; and means Within the casing for separatingdust and other solid particles from the gases passing therethrou h.

10. n an airy cleaner construction, the coin-l bination of a truncatedconical casing having means adapted to be positioned with its lower endat its base; detachable closure means for the small end of said casingforming a dust receptacle; closing means for the rear end of the casingincluding a plate secured to the casing edge and having inlet and outletapertures formed therein; and means within the casing for separati-ngdust and other solid particles from the gases passing therethrough, saidinlet aperture being positioned at a distance greater from the casingaxis than the outlet aperture.

11. In an air cleaner construction, the combination of a truncatedconical casing-having open ends adapted to be positioned with its axisapproximately vertical;\means forclosing the small end of the casing'additlonal means for closing the large end of the casinfr; a channelformed circumferentially in said large end closure, said channelcommunicating at one end with the interior of the casing and at theother end with the exterior of the casing, whereby an enclosedcircumferential assage-way is formed 'and an exit conduit ormedcentrally in said large end closure.

12. In an air cleaner construction, the combination of a truncatedconical casing having open ends; a detachable closure for the small-v erof said ends adapted to receive dust orl other solid matter separatedfrom gases pass-A ing through said cleaner; an air deliecting hoodpositioned above sald closure and adjacent thereto form-ing with saidclosure a dead air chamber; and means for closing the large end of saidcasingl having inlet and outlet `apertures formed therein; and inletmairdeilecting plates depending from the large end moana closing meansinterior of the inlet apertures.

13. 1n an air cleaner, the combination of a casing having inlet andoutlet conduits; a receptacle for dust particles; and a plurality ofsuperposed projecting surfaces adjacent and surrounding the outletconduit adapted to form dead air pockets.

14. 1n an air cleaner construction, the com` bination of a truncatedconical casing; detachable closure means for the small end of said casing forming a dust receptacle; closing means for the other end of saidcasing including a plate secured to said casing and having linlet andoutlet apertures formed therein; and means Within the casing forseparating dust and other solid particles from the gases passingtherethrough.

15. 1n an air cleaner construction, the combination of a truncatedconical casing; detachable closure means for the small end of saidcasing forming a dust receptacle; clos- `ing means for the otherend ofsaid casing including a plate secured to the casing having inlet andoutlet apertures formed therein, said inlet aperture being positioned ata distance from the axis of said casing; and means Within the casing forseparating dust particles from the gases passing therethrough.

1n testimony whereof, I aliix my signature.

Y HENRY R. DAVES. Y

